Top "El Chapo" aide known as "The Engineer" pleads guilty in Chicago to distributing cocaine and heroin

A man considered one of the chief aides to convicted drug boss Joaquin "El Chapo" Guzman pleaded guilty Friday in Chicago federal court to distributing more than 150 kilograms of cocaine and more than 30 kilograms of heroin.

Felipe Cabrera Sarabia, 51, known as "The Engineer," faces a minimum of 10 years in prison and a possible life sentence.

During a hearing before U.S. District Judge Sharon Johnson Coleman, Sarabia said through an interpreter that he had "always made a living as a cattle rancher," the Chicago Sun-Times reported.